Shell model description of isotope shifts in calcium

Citation
E. Caurier et al., Shell model description of isotope shifts in calcium, PHYS LETT B, 522(3-4), 2001, pp. 240-244
Citations number
24
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Physics
Journal title
PHYSICS LETTERS B
ISSN journal
0370-2693 → ACNP
Volume
522
Issue
3-4
Year of publication
2001
Pages
240 - 244
Database
ISI
SICI code
0370-2693(200112)522:3-4<240:SMDOIS>2.0.ZU;2-E
Abstract
Isotope shifts in the nuclear charge radius of even and odd calcium isotope s are calculated within the nuclear shell model. The model space includes a ll configurations of nucleons in the 2s, 21d(3/2), 1 f(7/2) and 2p(3/2) orb its. The shell model describes well the energies of the intruder states in Se and Ca, as well as the energies of the low-lying 2(+) and 3(-) states in the even Ca isotopes. The characteristic features of the isotope shifts, t he parabolic dependence on A and the prominent odd-even staggering, are wel l reproduced by the model. These features are related to the partial breakd own of the Z = 20 shell closure caused by promotion, due to the neutron-pro ton interaction, of the ds shell protons into the fp shell. (C) 2001 Elsevi er Science B.V. All rights reserved.